package com.hyg.common.utils;

import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Matrix;
import android.media.ExifInterface;
import android.net.Uri;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;

/**
 * Author: huangyuguang
 * Date: 2022/5/5
 */
public class BitmapUtils {

    /**
     *  图片压缩，不能大于1M，小于1M则不压缩
     */
    public static String compressImage(Context context,Uri imageUri) throws Exception {
        Bitmap bitmap = BitmapFactory.decodeStream(context.getContentResolver().openInputStream(imageUri));
        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        String imgPath = FileUriUtils.getFileByUri(context,imageUri);
        float bei = baos.toByteArray().length / 1048576f;
        if(bei > 1){
            //大于1M就进行压缩
            bitmap.compress(Bitmap.CompressFormat.JPEG, (int)(100 / bei), baos);
            //把压缩后的数据baos存放到ByteArrayInputStream中
            ByteArrayInputStream isBm = new ByteArrayInputStream(baos.toByteArray());
            //把ByteArrayInputStream数据生成图片
            Bitmap bm = BitmapFactory.decodeStream(isBm, null, null);
            int degree = readPictureDegree(imgPath);//读取照片旋转角度
            if (degree > 0) {
                bm = rotateBitmap(bm, degree); //旋转照片
            }
            String imgName = imgPath.substring(imgPath.lastIndexOf("/") + 1);
            File imgFile = new File(FileUtils.getDownFile(),imgName);
            FileOutputStream outputStream = new FileOutputStream(imgFile);
            bm.compress(Bitmap.CompressFormat.JPEG, 100, outputStream);
            return imgFile.getAbsolutePath();
        }else {
            return imgPath;
        }
    }

    public static Bitmap compressImage(Bitmap image) {
        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        //质量压缩方法，这里100表示不压缩，把压缩后的数据存放到baos中
        image.compress(Bitmap.CompressFormat.JPEG, 100, baos);
        int options = 100;
        //循环判断如果压缩后图片是否大于1MB,大于继续压缩
        while ( baos.toByteArray().length / 1024>1024) {
            //重置baos即清空baos
            baos.reset();
            //这里压缩options%，把压缩后的数据存放到baos中
            image.compress(Bitmap.CompressFormat.JPEG, options, baos);
            options -= 10;//每次都减少10
        }
        //把压缩后的数据baos存放到ByteArrayInputStream中
        ByteArrayInputStream isBm = new ByteArrayInputStream(baos.toByteArray());
        //把ByteArrayInputStream数据生成图片
        Bitmap bitmap = BitmapFactory.decodeStream(isBm, null, null);
        return bitmap;
    }

    public static Bitmap getimage(String srcPath) {
        BitmapFactory.Options newOpts = new BitmapFactory.Options();
        //开始读入图片，此时把options.inJustDecodeBounds 设回true了
        newOpts.inJustDecodeBounds = true;
        //此时返回bm为空
        Bitmap bitmap = BitmapFactory.decodeFile(srcPath,newOpts);

        newOpts.inJustDecodeBounds = false;
        int w = newOpts.outWidth;
        int h = newOpts.outHeight;
        //现在主流手机比较多是800*480分辨率，所以高和宽我们设置为
        float hh = 800f;//这里设置高度为800f
        float ww = 480f;//这里设置宽度为480f
        //缩放比。由于是固定比例缩放，只用高或者宽其中一个数据进行计算即可
        int be = 1;//be=1表示不缩放
        if (w > h && w > ww) {//如果宽度大的话根据宽度固定大小缩放
            be = (int) (newOpts.outWidth / ww);
        } else if (w < h && h > hh) {//如果高度高的话根据宽度固定大小缩放
            be = (int) (newOpts.outHeight / hh);
        }
        if (be <= 0)
            be = 1;
        newOpts.inSampleSize = be;//设置缩放比例
        //重新读入图片，注意此时已经把options.inJustDecodeBounds 设回false了
        bitmap = BitmapFactory.decodeFile(srcPath, newOpts);
        return compressImage(bitmap);//压缩好比例大小后再进行质量压缩
    }

    public static Bitmap comp(Bitmap image) {

        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        image.compress(Bitmap.CompressFormat.JPEG, 100, baos);
        //判断如果图片大于1M,进行压缩避免在生成图片
        //（BitmapFactory.decodeStream）时溢出
        if( baos.toByteArray().length / 1024>1024) {
            baos.reset();//重置baos即清空baos
            //这里压缩50%，把压缩后的数据存放到baos中
            image.compress(Bitmap.CompressFormat.JPEG, 50, baos);
        }
        ByteArrayInputStream isBm = new ByteArrayInputStream(baos.toByteArray());
        BitmapFactory.Options newOpts = new BitmapFactory.Options();
        //开始读入图片，此时把options.inJustDecodeBounds 设回true了
        newOpts.inJustDecodeBounds = true;
        Bitmap bitmap = BitmapFactory.decodeStream(isBm, null, newOpts);
        newOpts.inJustDecodeBounds = false;
        int w = newOpts.outWidth;
        int h = newOpts.outHeight;
        //现在主流手机比较多是800*480分辨率，所以高和宽我们设置为
        float hh = 800f;//这里设置高度为800f
        float ww = 480f;//这里设置宽度为480f
        //缩放比。由于是固定比例缩放，只用高或者宽其中一个数据进行计算即可
        int be = 1;//be=1表示不缩放
        if (w > h && w > ww) {//如果宽度大的话根据宽度固定大小缩放
            be = (int) (newOpts.outWidth / ww);
        } else if (w < h && h > hh) {//如果高度高的话根据宽度固定大小缩放
            be = (int) (newOpts.outHeight / hh);
        }
        if (be <= 0)
            be = 1;
        newOpts.inSampleSize = be;//设置缩放比例
        //重新读入图片，注意此时已经把options.inJustDecodeBounds 设回false了
        isBm = new ByteArrayInputStream(baos.toByteArray());
        bitmap = BitmapFactory.decodeStream(isBm, null, newOpts);
        return compressImage(bitmap);//压缩好比例大小后再进行质量压缩
    }

    /**
     * 读取照片的旋转角度
     * @param path
     * @return
     */
    public static int readPictureDegree(String path) {
        int degree = 0;
        try {
            ExifInterface exifInterface = new ExifInterface(path);
            int orientation = exifInterface.getAttributeInt(ExifInterface.TAG_ORIENTATION, ExifInterface.ORIENTATION_NORMAL);
            switch (orientation) {
                case ExifInterface.ORIENTATION_ROTATE_90:
                    degree = 90;
                    break;
                case ExifInterface.ORIENTATION_ROTATE_180:
                    degree = 180;
                    break;
                case ExifInterface.ORIENTATION_ROTATE_270:
                    degree = 270;
                    break;
            }
        }catch (IOException e) {
            e.printStackTrace();
        }

        return degree;
    }

    /**
     * 旋转照片
     * @param bitmap
     * @param rotate
     * @return
     */
    private static Bitmap rotateBitmap(Bitmap bitmap, int rotate) {
        int w = bitmap.getWidth();
        int h = bitmap.getHeight();
        Matrix matrix = new Matrix();
        matrix.postRotate(rotate);
        return Bitmap.createBitmap(bitmap, 0, 0, w, h, matrix, true);
    }

    public static boolean saveBitmap(Bitmap bm, String path) {
        File saveFile = new File(path);
        FileUtils.createOrExistsDir(saveFile.getParentFile());
        try {
            FileOutputStream saveImgOut = new FileOutputStream(saveFile);
            // compress - 压缩
            bm.compress(Bitmap.CompressFormat.JPEG, 80, saveImgOut);
            saveImgOut.flush();
            saveImgOut.close();
            return true;
        } catch (IOException ex) {
            ex.printStackTrace();
            return false;
        }
    }

}
